Abstract
An error diffusion and an iterative concept that is based on the Fourier-transform algorithm are applied to binarize nonperiodic diffractive elements that generate speckle-free diffraction patterns. These methods are used successfully to calculate periodic elements and are adapted to specific constraints in the case of nonperiodic elements. Techniques to avoid stagnation are described, and optical experiments are presented.
© 1992 Optical Society of America
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